Materials contain photographic prints, photographic slides, and photographic negatives depicting the Hoover (Boulder) Dam from 1930 to 1959. The photographs primarily depict the completed dam, including its upstream and downstream faces, diversion tunnels, outlet works, powerhouse, intake towers, crest, and spillways. The photographs depict the dam from numerous angles, including photographs taken from both the Nevada and Arizona sides of the dam, the Colorado River, Lake Mead, and aerial photographs taken from planes.

Materials contain photographic prints, photographic slides, and photographic negatives of Boulder City, Nevada from 1930 to 1969. The photographs depict buildings in Boulder City, including City Hall, the Bureau of Reclamation headquarters, the Boulder Theatre, the Boulder Dam Hotel, the Boulder City airport, the Visitors Bureau, businesses, and houses.

Materials contain photographic prints, photographic slides, and photographic negatives that depict Las Vegas, Nevada from 1930 to 1967. The photographs primarily depict downtown Las Vegas, especially the hotels, casinos, and clubs on Fremont Street: the Hotel Last Frontier, Sands Hotel, Frontier Club, Pioneer Club, Sal Sagev Hotel, Overland Hotel, Northern Club, Las Vegas Club, Apache Club, Eldorado Club, El Rancho Vegas Hotel, Golden Nugget, Boulder Club, and Desert Inn. The photographs also depict several hotels on the Las Vegas Strip, including the Flamingo Hotel and the Thunderbird Hotel.